Geoparque Unesco

R.0. From Aínsa to Guaso

Route 0. Aínsa - Margudgued - Guaso - Aínsa

The rocks crossed by this route were formed in deep marine environments during the Middle Eocene epoch. Most of them are sandstone and marlstone..

At the first point of interest, we can observe the typical braided course of a Pyrenean river. It is characterized by the presence of braided channels divided by rocky islets, some of them even with vegetation..

From the next point, we can observe the Boltaña Anticline, one of the most important tectonic structures in the geological history of the Eocene Basin in Aínsa..

From Guaso, heading towards Santa María de Buil, we can observe the transition from rocks formed in deep marine environments (blue-greyish colour) to those formed by rivers and torrents (reddish colour).At the final point, we can observe some vertical cylindrical pipes running inside the sandstone layers. They are examples of the activity of organisms fleeing towards the surface of the layer.

UTM ED50 31 T: 264342 4699957 / 260159 4702018 / 261440 4700323 / 262019 4699783

Route map highlighting the points of geological interest along Route 0. Aínsa-Margudgued-Guaso-Aínsa.

Recomentations in your visit to Sobrarbe-Pirineos Geopark

  • Safe visits, unforgettable experiences. There are companies who collaborate with the Geopark where you can hire specialized guides to make your tour a unique and safe experience.
  • Respect the geological outcrops. Do not break off samples of rock, mineral or fossils; anly take the loose pieces

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